GERM-19. DIAGNOSTIC EXPOSURE TO LOW-DOSE RADIATION AND SPONTANEOUS REGRESSION IN INTRACRANIAL GERM CELL TUMORS

摘要

BACKGROUNDSpontaneous regression in intracranial germ cell tumors has been reported in some literatures, but the mechanism has not been well known. We retrospectively measured the tumor volume before chemoradiotherapy and analyzed factors that influence shrinkage of tumor volume. PATIENTS AND